People Tech Group Ruby on Rails Developer Interview Questions and Answers

Was asked to create a game of finger cricket (like the one indians played in school (90s kids))

Q1. Detailed Architectural discussion on my current project and technical questions.
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Q1. Social change interview.
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Q1. Salary negotiation
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It's aptitude and coding test they asked questions related to data interpretation mostly.and one coding question easy one and two SQL questions I got on joins

Topic given by them you have two minutes to think and then discuss with group for 5 minutes. At the end they ask for conclusion from everyone there is group of eight students and they select two or three from them

Q1. Asked about testing
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Q2. What are types of testing
Ans. 
Types of testing include unit testing, integration testing, system testing, acceptance testing, and regression testing.
• Unit testing: Testing individual components or functions of the software.

• Integration testing: Testing how different components work together.

• System testing: Testing the entire system as a whole.

• Acceptance testing: Testing to ensure the software meets the requirements.

• Regression testing: Testing to ensu...read more
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Q3. Project related questions
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Q4. Hr related questions
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Q5. Whitebox vs black box testing
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Whitebox testing is testing the internal logic of the software, while black box testing is testing the functionality without knowledge of the internal code.
• Whitebox testing involves testing the internal structure, code paths, and algorithms of the software.

• Black box testing involves testing the functionality, inputs, and outputs of the software without knowledge of the internal code.

• Whitebox testing is typically done b...read more
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General aptitude & domain quiz

Analytics case study & ppt submission

Q1. Technical interview & presentation
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Moderate Level questions were asked.

Medium level questions were asked.

Q1. Split array into specified size
Ans. 
Split an array of strings into specified size chunks
• Use a loop to iterate through the array and slice it into chunks of specified size

• Check if the array length is divisible by the specified size, if not handle the remaining elements separately

• Example: ['apple', 'banana', 'cherry', 'date'] split into chunks of size 2 would result in [['apple', 'banana'], ['cherry', 'date']]
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Q2. Flatten nested array
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Q3. Internal working of the hash map with custom object
Ans. 
A hash map is a data structure that stores key-value pairs, using a hash function to map keys to indexes in an array.
• Hash map uses a hash function to determine the index of the key in the underlying array.

• Collision resolution techniques like chaining or open addressing are used to handle cases where multiple keys hash to the same index.

• Custom objects used as keys must override the hashCode() and equals() methods for pr
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Q4. SQL query to find the highest salary from a specific department
Ans. 
SQL query to find the highest salary from a specific department
• Use the MAX() function to find the highest salary

• Filter the results based on the specific department using WHERE clause

• Join the employee table with the department table if necessary
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Q1. Working of the hash set with the employee object

Ans. 

A hash set stores unique elements using a hash function for efficient retrieval.

• Hash set stores unique elements based on their hash code

• Employee object must have proper hashCode() and equals() methods implemented

• Example: HashSet employeeSet = new HashSet<>();

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